Hi,
do you have any guidelines, rules, practices, standards about this topic:
- storage in steel tank of waste water, with hydrocarbons into solubility range, discharged by a chemical plant: distances from plants, if or when needed a basin and waterproof floorring, etc.
tx
Someone can help to find guidelines, rules, practices, standards about this topic:
storage of dirty water or waste water, with hydrocarbons into solubility range, of a chemical plant: distances from plants, if or when needed a basin and waterproof florring, etc.
tx
hi,
in an horizontal circular channel there is a flow of liquid, it's not full of liquid.
Here is the question:
1 - is there a reduction of level along the pipe?
2 - if yes, how can be estimated?
Hi,
i don't know if this is the better forum for this question: there is a method to define how much air needs to cool an hotspot (refractory failure?
tx
thread330-302874
hi
ref. "The practise here is we apply cooling steam hose at the hot spots/stingers & it is kept until next outage of the equipment where the necessary actions are taken to repair the refractory."
where can i find the design criteria to define flow rate of external cooling...
Hi,
an auto regulation device of upstream pressure loses its seal while the downstream pipeline is blocked in; so the pressure rises to the set value and the PSV start opening. The leakage flow is a very low fraction of nominal flowrate od PSV, for example 1% or minus. What scenarious you think...
Hi,
this is the question:
i have a "flow through inertization" of an external envelope with the scope of reducing internal corrosion due to air, so i have to maintain a low content of humid air inside the metal envelope.
Do you know a criteria for flowrate?
I think it could be very low, > 0.2...
Hi,
an other question.
Normally, several plants have one relief valve that protects more than one equipment.
I think it's a good design criteria to minimize the number of valves but if there is the fire contingency, maybe it's better to install more valves:
when the equipment group is located...
Hi,
could you help me with the approch to a PSV calculation?
Follow some conditions:
fluid ethylene
critical pressure 50.6 bar
relief pressure = 3000 bar
relief T = 80°C
density about 602 kg/m3
Z by density ~5
It has the density of a liquid but is a supercritical gas, which calculation method...
There are any limits to the speed of an external floating roof (API650 hydrocarbons) during operations?
Somewhere I read ~3.5 m/h, that's correct? There are useful technical references?
The objective is to carry out safe loading/unloading operations.
Thanks
Hi,
when need modifications of existing systems, we must often estimate the CV of hand-valves (example 1/2" gate valve on nitrogen blancketing line).
Anyone can help me, i tried to find a table...
Tx
Hi,
anyone can help me to find methods for wetted and dry PD?
i have only these data:
tipe CWMS
density 160 kg/m3
thick mesh 150 mm
free vapour flow area 0,385 m2
flowrate 2000 Act m3/h
Hi,
I have a line of incondensables+condensables at 40°C that is bare, without insulation and with pockets. The fluid reduces its temperature because it exchanges heat with the ambient (convenction, wind action, radiation, etc) and condenses, so it needs to design a system to avoid liquid...
Hi this is my question:
what's the meaning of "The CET for systems constructed to ASME B31.3 is defined as the lowest metal temperature at which a component will be subject to either 30 percent of the maximum allowable working pressure (MAWP) at ambient temperature or a combined total...
Hi
I'm going to define an overpressure protection device for a steam traced & insulated pipe-line.
How can calculate or estimate the heat-trasfer coefficient U or the max thermal flux to the fluid?
There is a short-cut method?
Tx very much
Main data:
fluid heavy oil
normal temperature of fluid...
